package com.neusoft.news.controller;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.neusoft.news.bean.Column;
import com.neusoft.news.bean.News;
import com.neusoft.news.service.ColumnService;
import com.neusoft.news.service.NewsService;

/**
 * Servlet implementation class ShowNewsByColumnServlet
 */
@WebServlet("/ShowNewsByColumnServlet")
public class ShowNewsByColumnServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ShowNewsByColumnServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		HttpSession session = request.getSession();
		response.setContentType("text/html;charset=utf-8");
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
		String column_id = request.getParameter("column_id");
		NewsService newsService = new NewsService();
		List<News> newslist = newsService.selectNewsByColumn(column_id);
		ColumnService columnService = new ColumnService();
		List<Column> columnlist = columnService.selectAllColumn();
		if(newslist!=null && columnlist!=null) {
			request.setAttribute("newslist", newslist);
			request.setAttribute("columnlist", columnlist);
			request.getRequestDispatcher("/WEB-INF/jsp/showNewsList.jsp").forward(request, response);
		}else {
			String msg = "查询失败";
			request.setAttribute("msg", msg);
			request.getRequestDispatcher("index.jsp").forward(request, response);
		}
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}
